Improvement in turbine water-wheels



.s. ,M. STEVENS.

Patented M'arc hH,1873.

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AM PHOTO'L rrno sRAP/uc ca. N x (assanws macsss) PATENT OEEIo STEPHEN M.STEVENS, OF LANCASTER, IOWA, ASSIGNOR OF ONE-HALF HIS RIGHT TO SAMUEL W.

BRUNT, OF SAME PLACE.

IMPROVEMENT IN TURBINE WATER-WHEELS.

Specification forming part oi Letters Patent No. 136,784, dated March11, 1873.

To all whom it may concern:

Be it known that I, STEPHEN M. STEVENS, of Lancaster, in the county ofKeokuk and State of Iowa, have invented certain Improvements on TurbineWater-Wheels, of which the following is a specification:

The drawing hereof shows a turbine wheel constructed under my invention,Figure 1 being a top view of the wheel; Fig. 2, a sectional view withpart of the frame omitted; Fig. 3, a view of one of the gates; and Fig.4, a view of one of the buckets.

a indicates the base of the wheel, with a cross-bar, I), to support thestep c; d, the inclosingcase; e, the buckets; f, the band to which thebottom of the buckets is affixed; g, the plate, to which are attachedthe upper ends of the buckets; h, the shaft; 1', the supportingcross-bar for the shaft; j, the topplate; 70, the chutes or water-inletsl, the gates; m, the bar for moving the gates.

The buckets, gates, and several of the other parts are made of steel.The buckets are secured to the plate and band by lugs, which are formedby clipping the sheet-steel of the buckets and bending them to theproper shape. The band f forms the entire support for the lower ends ofthe buckets, thus completing the periphery of the wheel.

The gates lie in agroove formed in the top plate, and are, therefore,very fully protected from displacement and injury. They are made ofsteel, and have an inclined and a beveled edge at the end near thechute. This cutting end of the gate serves to keep the chute-mouth clearof wood, sticks, &c., and to remove any ice that may form about theopening. The form of the gate here shown and its being fitted into thegroove in the top or deck plate insure its being always tight and notleaking, as the gate will always fit close to the seat.

The means for opera-ting the gates, which are shown by Fig. 1, thepinion fitting into Witnesses:

DANIEL WILDE, JOHN H. WILDE.

